继续发一个也是定时器4的应用程序,这次是基于中断的方法的。实现功能跟上面软件查询的一样,简单的流水灯。 
#include "STM8S105C_S.h" 
#define uint unsigned int 
#define uchar unsigned char 
uchar table[]={0x00,0x01,0x04,0x08}; 
uchar i=0; 
 
void GPIO_Init(void) 
{ 
        PD_DDR|=0x0d;                                        //3个LED端口(PD3 PD2 PD0 )设为推挽输出,频率10M  方向,方式,频率 
        PD_CR1|=0x0d; 
        PD_CR2|=0x0d; 
} 
void Time4_Init(void) 
{ 
        TIM4_IER=0x01;                                        //禁止触发中断,使能更新中断 
        TIM4_EGR=0x01;                                        //计数器溢出时,更新事件产生 
        TIM4_PSCR=0x07;                                //对计数脉冲进行128分频 
        TIM4_ARR=255;                                        //计数值,当计数器计数到这个值就溢出 
        TIM4_CR1=0x01;                                        //使能计数器 
        _asm("rim");//这是开中断  
} 
 
main() 
{ 
 GPIO_Init(); 
 Time4_Init(); 
 while (1) 
 { 
                PD_ODR=table[i];                        //往IO口写数据 
 } 
} 
@far @interrupt void TIM4_UPD_OVF_IRQHanlder (void) 
{ 
        TIM4_SR=0x00; 
        i++; 
        if(i==4)i=0; 
} 
 
 
/*        BASIC INTERRUPT VECTOR TABLE FOR STM8 devices 
 *        Copyright (c) 2007 STMicroelectronics 
 */ 
 
typedef void @far (*interrupt_handler_t)(void); 
 
struct interrupt_vector { 
        unsigned char interrupt_instruction; 
        interrupt_handler_t interrupt_handler; 
}; 
 
@far @interrupt void NonHandledInterrupt (void) 
{ 
        /* in order to detect unexpected events during development,  
           it is recommended to set a breakpoint on the following instruction 
        */  
        return; 
} 
 
extern void _stext();     /* startup routine */ 
extern @far @interrupt void TIM4_UPD_OVF_IRQHanlder (void); 
struct interrupt_vector const _vectab[] = { 
        {0x82, (interrupt_handler_t)_stext}, /* reset */ 
        {0x82, NonHandledInterrupt}, /* trap  */ 
        {0x82, NonHandledInterrupt}, /* irq0  */ 
        {0x82, NonHandledInterrupt}, /* irq1  */ 
        {0x82, NonHandledInterrupt}, /* irq2  */ 
        {0x82, NonHandledInterrupt}, /* irq3  */ 
        {0x82, NonHandledInterrupt}, /* irq4  */ 
        {0x82, NonHandledInterrupt}, /* irq5  */ 
        {0x82, NonHandledInterrupt}, /* irq6  */ 
        {0x82, NonHandledInterrupt}, /* irq7  */ 
        {0x82, NonHandledInterrupt}, /* irq8  */ 
        {0x82, NonHandledInterrupt}, /* irq9  */ 
        {0x82, NonHandledInterrupt}, /* irq10 */ 
        {0x82, NonHandledInterrupt}, /* irq11 */ 
        {0x82, NonHandledInterrupt}, /* irq12 */ 
        {0x82, NonHandledInterrupt}, /* irq13 */ 
        {0x82, NonHandledInterrupt}, /* irq14 */ 
        {0x82, NonHandledInterrupt}, /* irq15 */ 
        {0x82, NonHandledInterrupt}, /* irq16 */ 
        {0x82, NonHandledInterrupt}, /* irq17 */ 
        {0x82, NonHandledInterrupt}, /* irq18 */ 
        {0x82, NonHandledInterrupt}, /* irq19 */ 
        {0x82, NonHandledInterrupt}, /* irq20 */ 
        {0x82, NonHandledInterrupt}, /* irq21 */ 
        {0x82, NonHandledInterrupt}, /* irq22 */ 
        {0x82, TIM4_UPD_OVF_IRQHanlder}, /* irq23 */ 
        {0x82, NonHandledInterrupt}, /* irq24 */ 
        {0x82, NonHandledInterrupt}, /* irq25 */ 
        {0x82, NonHandledInterrupt}, /* irq26 */ 
        {0x82, NonHandledInterrupt}, /* irq27 */ 
        {0x82, NonHandledInterrupt}, /* irq28 */ 
        {0x82, NonHandledInterrupt}, /* irq29 */ 
};
 |